Physics
Time of exposure required for taking photograph of an object depends upon the

Proximity of object
Size of the object
Brightness of the object
Skill of photographer

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Physics
Rainbows are produced when sunlight :

None of the given statements is correct.
Incident on raindrops hanging in the atmosphere is dispresed after suffering reflection.
Incident on rain drops hanging in the atmosphere is dispersed after suffering refraction
Incident on rain drops hanging in the atmosphere is dispersed after suffering refraction and internal reflection.

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